Snat on vip clarification

Will I get the same result if I configure snat-on-vip, not configuring any snat or configuring snat with a snat pool that have the vip ip address only?

what is the difference between configuring:

1- slb snat-on-vip
2- NOT configuring any snat

3- slb snat source nat-pool with pool that include a single ip address which is the vip ip address itself.

Just found a nice doc that explain the difference. Thx.